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Summary of Contents for phase II UTG-2900
- Page 1 Model No. UTG-2900 283 Veterans Blvd Carlstadt, NJ. 07072 (201) 933-6300 www.phase2plus.com GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com...
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Page 2: Table Of Contents
1 Overview ................. 3 1.1 Product Specifications ......... 3 1.2 Main Functions ............. 4 1.3 Measuring Principle ..........4 1.4 Configuration ............4 1.5 Operating Conditions........... 5 2 Structure Feature ............5 2.1 Measurement Screen .......... 5 2.2 Keypad Definitions ..........6 3 Preparation .............. -
Page 3: Overview
SONAR, the instrument is capable of measuring the thickness of various materials with accuracy as high as 0.001”. It is suitable for testing a variety of metallic and non‐metallic materials. Specifications Model No. UTG-2900 4.5 -digit LCD w/Back Light Display type 0.001”/0.01mm (selectable) Minimum display unit Pulse-Echo: 0.025”-23.0”... -
Page 4: Main Functions
1.2 Main Functions 1) Capable of performing measurements on a wide range of material, including metals, plastic, ceramics, composites, glass and other ultrasonic wave conductive materials. 2) Optional transducers are available for special applications, including for Rough Surface and High Temperature applications. 3) Probe‐Zero function, Sound‐Velocity‐Calibration function 4) Two‐Point Calibration function. 5) Measuring Modes: Standard(Pulse‐Echo) and Thru Coat(Echo‐Echo) 6) Two work modes: Single point mode and Scan mode. 7) Coupling status indicator showing the contact status. 8) Battery icon indicates the capacity of the battery. 9) Auto sleep and auto power off function to conserve battery life. 1.3 Measuring Principle The digital ultrasonic thickness gauge determines the thickness of a part or structure by accurately measuring the time required for a short ultrasonic pulse generated by a transducer to travel through the thickness of the material, reflect from the back or inside surface, and be returned to the transducer. The measured two‐way transit time is divided by two to account for the down‐and‐back travel path, and then multiplied by the velocity of sound in the material. The result is expressed in the equation shown below: ... -
Page 5: Operating Conditions
1.5 Operating Conditions Operating Temperature: 0°‐ 140°F (－20～＋60 ) Storage Temperature：22° ‐ 150°F (‐30 ～＋70 ) Relative Humidity ≤90％ The surrounding environment should be void of vibration, strong magnetic field, corrosive medium and heavy dust. 2 Structure Feature 1) Base Instrument 2) Keypad 3) LCD display 4) Calibration Block 5) Dual Sensor Probe 6) Software 7) USB Output Cable 8) Couplant Gel 2.1 Main Screen 1, Coupling Indicator: Indicates the coupling status. While the gauge is taking a measurement, the coupling indicator will be displayed. If it is not, the gauge is having difficulty achieving a stable measurement, and the thickness value displayed will most likely be erroneous. -
Page 6: Keypad Definitions
2.2 Keypad Definitions Part No. Description Power On/Off Save Enter Back Light Probe Zero Inch/metric Thru‐Coating on/off Scan on/off Calibration / Velocity setting Calibration block 0.157” (4mm) GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 7: Preparation
3 Preparation 3.1 Transducer Selection The UTG‐2900 is capable of performing measurements on a wide range of materials, from various metals to glass and plastics. Different types of material, however, will require the use of different transducers. Choosing the correct transducer for a job is critical to being able to easily perform accurate and reliable measurement. The UTG‐2900 is supplied with a 5MHz dual sensor probe that is considered to be the general purpose probe of the group. The following paragraphs highlight the important properties of transducers, which should be considered when selecting a transducer for a specific job. - Page 8 Selection of the proper transducer is often a matter of tradeoffs between various characteristics. It may be necessary to experiment with a variety of transducers in order to find one that works well for a given job. The transducer is the “business end” of the instrument. It transmits and receives ultrasonic sound waves that the instrument uses to calculate the thickness of the material being measured. The transducer connects to the instrument via the attached cable, and two coaxial connectors. When using transducers, the orientation of the dual coaxial connectors is not critical: either plug may be fitted to either socket in the instrument. The transducer must be used correctly in order for the instrument to produce accurate, reliable measurements. Below is a short description of the transducer, followed by instructions for its use. Above Left figure is a bottom view of a typical transducer. The two semicircles of the wearface are visible, as is the barrier separating them. One of the semicircles is responsible for conducting ultrasonic sound into the material being measured, and the other semicircle is responsible for conducting the echoed sound back into the transducer. When the...
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Page 9: Condition And Preparation Of Surfaces
3.2 Condition and Preparation of Surfaces In any ultrasonic measurement scenario, the shape and roughness of the test surface are of paramount importance. Rough, uneven surfaces may limit the penetration of ultrasound through the material, and result in unstable, and therefore unreliable, measurements. The surface being measured should be clean, and free of any small particulate matter, rust, or scale. The presence of such obstructions will prevent the transducer from seating properly against the surface. Often, a wire brush or scraper will be helpful in cleaning surfaces. In more extreme cases, rotary sanders or grinding wheels may be used, though care must be taken to prevent surface gouging, which will inhibit proper transducer coupling. -
Page 10: Probe Zero
4.2 Probe Zero IMPORTANT! When performing a probe zero in the Echo to Echo mode, it must be done using a part without any coatings The key is used to “zero” the instrument in much the same way that a mechanical micrometer is zeroed. If the gauge is not zeroed correctly, all the measurements that the gauge makes may be in error by some fixed value. When the instrument is “zeroed”, this fixed error value is measured and automatically corrected for all subsequent measurements. The instrument may be “zeroed ” by performing the following procedure.: 1) Plug the transducer into the instrument. Make sure that the connectors are fully engaged. Check that the wearface of the transducer is clean and free of any debris. - Page 11 4.3.1 Calibration to a known thickness Note: This procedure requires a sample piece of the specific material to be measured, the exact thickness of which is known, e.g. from having been measured by some other means. 1) Perform a Probe‐Zero. 2) Apply couplant to the sample piece. 3) Press the transducer against the sample piece, making sure that the transducer sits flat against the surface of the sample. The display should show some thickness value, and the coupling status indicator should appear steadily. 4) Having achieved a stable reading, remove the transducer. If the displayed thickness changes from the value shown while the transducer was coupled, repeat step 3. 5) Press the key to activate the calibration mode. The MM (or IN) symbol should begin flashing. 6) Use the key and the key to adjust the displayed thickness up or down, until it matches the thickness of the sample piece. 7) Press the key again. The M/S (or IN/μS) symbols should begin flashing. The gauge will now display the sound velocity value it has calculated based on the thickness value that was entered. 8) Press the key once again to exit the calibration mode and return to the measurement mode. The gauge is now ready to perform measurements. 4.3.2 Calibration to a known velocity Note: This procedure requires that the operator knows the sound velocity of the material to be measured. A table of common materials and their sound velocities can be found in Appendix A of this manual. 1) Press the key to activate the calibration mode. The MM (or IN) symbol should begin flashing. 2) Press the key again, so that The M/S (or IN/μS) symbols are flashing. 3) Use the key and the key to adjust the sound velocity value up or down, until it matches the sound velocity of the material to be measured. You can also press the...
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Page 12: Making Measurements
4.3.3 Two Point Calibration Note: This procedure requires that the operator has two known thickness points on the test piece that are representative of the range to be measured. 1) Perform a Probe‐Zero. 2) Apply couplant to the sample piece. 3) Press the transducer against the sample piece, at the first/second calibration point, making sure that the transducer sits flat against the surface of the sample. The display should show some (probably incorrect) thickness value, and the coupling status indicator should appear steadily. -
Page 13: Scan Mode
If the coupling status indicator does not appear not stable, or the numbers on the display seem erratic, check to make sure that there is an adequate film of couplant beneath the transducer, and that the transducer is seated flat against the material. If the condition persists, it may be necessary to select a different transducer (size or frequency) for the material being measured. While the transducer is in contact with the material that is being measured, the instrument will perform four measurements every second, updating its display as it does so. When the transducer is removed from the surface, the display will hold the last measurement made. -
Page 14: Memory Management
4.8 Memory Management 4.8.1 Storing a reading There are twenty files (F00‐F19) that can be used to store the measurement values inside the gauge. At most 100 records (thickness values) can be stored to each file. By simply pressing the key after a new measurement reading appears, the measured thickness value will be saved to current file. It is added as the last record of the file. To change the destination file to store the measured values, follow the steps: 1) Press the key to activate the data logging functions. It will display the current file name and the total record count of the file. 2) Use the key and the key to select the desired file to set as current file. 3) Press the key to exit the data logging functions at any time. 4.8.2 Clearing selected file The user may require the contents of an entire file be completely cleared of all measurements. This would allow the user to start a new list of measurements starting at storage location L00. The procedure is outlined in the following steps. Press the key to activate the data logging functions. It will display the current file name and the total record count of the file. Use the key and the key to scroll to the file that will be cleared of all measurements. Press the key on the desired file. It will automatically clear the file, and display “‐DEL”. Press the key, at any time, to exit the data logging functions and return to measurement mode. 4.8.3 Viewing/deleting stored record This function provides the user with the ability to view/delete a record in a desired file previously saved in memory. Following is the steps: Press the key to activate the data logging functions. It will display the current file name and the total record... -
Page 15: Data Printing
4.9 Data Printing At the end of the inspection process, or end of the day, the user may require the readings be transferred to a computer. The following steps outline this procedure. Before printing, please insert one connection plug of the print cable (Optional parts) into the socket on the upper‐left of the main body, and insert the other plug into the communication socket of the mini‐printer. -
Page 16: Servicing
5 Service ALL SERVICE AND/OR REPAIRS MUST BE DONE THROUGH THE PHASE II SERVICE DEPARTMENT. A return authorization number is mandatory in order for a defective tester to be accepted for repair and/or replacement. All testers must be accompanied by your warranty card or serial number. Complete description of problem and a contact person for authorization of repairs must be supplied as well. ANY ATTEMPT AT HOME REPAIR WILL AUTOMATICALLY VOID THE STATED WARRANTY! NO EXCEPTIONS! 6 Transport and Storage Be sure to clean the probe and cable after each use. Grease, oil and dust will cause the cable of the probe to age and crack. If the unit is not to be used for a long period of time, remove the batteries to avoid battery leakage and corrosion of the battery contacts. Avoid storing the unit in a damp or extremely hot environment. GlobalTestSupply www. .com Find Quality Products Online at: sales@GlobalTestSupply.com... -
Page 17: Appendix B Applications Notes
Appendix B Applications Notes Measuring pipe and tubing. When measuring a piece of pipe to determine the thickness of the pipe wall, orientation of the transducers is important. If the diameter of the pipe is larger than approximately 4 inches, measurements should be made with the transducer oriented so that the gap in the wearface is perpendicular (at right angle) to the long axis of the pipe. For smaller pipe diameters, two measurements should be performed, one with the wearface gap perpendicular, another with the gap parallel to the long axis of the pipe. The smaller of the two displayed values should then be taken as the thickness at that point. Measuring hot surfaces The velocity of sound through a substance is dependant upon its temperature. As materials heat up, the velocity of sound through them decreases. In most applications with surface temperatures less than about 100 , no special... - Page 18 Couplants All ultrasonic applications require some medium to couple the sound from the transducer to the test piece. Typically a high viscosity liquid is used as the medium. The sound used in ultrasonic thickness measurement does not travel through air efficiently. A wide variety of couplant materials may be used in ultrasonic gauging. Propylene glycol is suitable for most applications. In difficult applications where maximum transfer of sound energy is required, glycerin is recommended. However, on some metals glycerin can promote corrosion by means of water absorption and thus may be undesirable. Other suitable couplants for measurements at normal temperatures may include water, various oils and greases, gels, and silicone fluids. Measurements at elevated temperatures will require specially formulated high temperature couplants.
- Page 19 All velocities are approximations: SOUND VELOCITY MEASUREMENT CHART Material Sound Velocity Inch/µS M/s Air 0.013 330 Aluminum 0.250 6300 Alumina Oxide 0.390 9900 Beryllium 0.510 12900 Boron Carbide 0.430 11000 Brass 0.170 4300 Cadmium 0.110 2800 Copper 0.180 4700 Glass(crown) 0.210 5300 Glycerin 0.075 1900 Gold 0.130 3200 Ice 0.160 4000 Inconel...
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